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Method for forming ZnS/SnS/CuA core-shell structure composite powder through thermosynthesis of normal pressure solvent

A core-shell structure, composite powder technology, applied in chemical instruments and methods, tin compounds, microcapsule preparations, etc., can solve the problems of slow reaction speed, harshness, difficult controllable synthesis of core-shell, etc. The effect of low cost and strong controllability of the reaction process

Inactive Publication Date: 2013-04-24
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] ZnS / SnS / Cu(S and / or Se) semiconductor materials can be used in the preparation of thin-film solar cell precursors and the development and production of related photoelectric conversion devices; usually, the conditions for solvothermal synthesis of the above-mentioned composite materials are relatively harsh, and the reaction speed is slow. Slower, even after a long time of heat preservation under closed high pressure; this synthesis method is also less flexible, and the intermediate process of the reaction cannot be intervened in a closed environment, and it is difficult to complete the controllable synthesis of specific structures such as core-shell

Method used

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  • Method for forming ZnS/SnS/CuA core-shell structure composite powder through thermosynthesis of normal pressure solvent
  • Method for forming ZnS/SnS/CuA core-shell structure composite powder through thermosynthesis of normal pressure solvent
  • Method for forming ZnS/SnS/CuA core-shell structure composite powder through thermosynthesis of normal pressure solvent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Take by weighing 2.7375 grams of zinc acetate, 2.8206 grams of stannous chloride, 2.8549 grams of thiourea, 4.9913 grams of copper acetate and 2.961 grams of selenium powder, wherein zinc acetate, stannous chloride, thiourea and copper acetate are respectively dissolved in ethylene glycol to obtain a solution, and the selenium powder is dissolved in hydrazine hydrate to obtain a solution.

[0028] (2) Add the ethylene glycol solution of zinc acetate prepared in step (1) and the ethylene glycol solution of thiourea into a three-necked flask and mix them, then add 5 milliliters of ethylenediamine, and place the three-necked flask in a magnetic stirring oil bath , and the three bottle mouths were respectively inserted with sealing plugs, condenser tubes and thermometers, heated while stirring, and kept at 150°C for 1 hour, then naturally cooled to room temperature to prepare a solution containing ZnS nanopowder.

[0029] (3) Add the ethylene glycol solution of the tin ...

Embodiment 2

[0033] (1) Take by weighing 0.5488 gram of zinc acetate, 0.5641 gram of stannous chloride, 0.3806 gram of thiourea, 0.9983 gram of copper acetate and 0.3806 grams of thiourea, wherein zinc acetate, stannous chloride, copper acetate and two parts of thiourea are dissolved in ethylene glycol respectively to obtain a solution, and the ethylene glycol solutions of two parts of thiourea are respectively marked a (containing 0.3806 grams of thiourea) , b (containing 0.3806 grams of thiourea).

[0034] (2) The ethylene glycol solution of zinc acetate prepared in step (1) and the ethylene glycol solution of No. a thiourea are added in a three-necked flask and mixed, and the three-necked flask is placed in a magnetic stirring oil bath, and three bottles Insert a sealing plug, a condenser tube and a thermometer into the mouth respectively, stir while heating, keep warm at 150°C for 1 hour, and cool naturally to room temperature to prepare a solution containing ZnS nanopowder.

[0035] ...

Embodiment 3

[0039] (1) Take by weighing 0.5488 gram of zinc acetate, 0.5641 gram of stannous chloride, 0.5709 gram of thiourea, 0.9983 gram of copper acetate and 0.5709 grams of thiourea, wherein zinc acetate, stannous chloride, copper acetate and two parts of thiourea are dissolved in ethylene glycol respectively to obtain a solution, and the ethylene glycol solutions of two parts of thiourea are respectively labeled a (containing 0.5709 grams of thiourea) , b (containing 0.5709 grams of thiourea).

[0040](2) The ethylene glycol solution of zinc acetate prepared in step (1) and the ethylene glycol solution of No. a thiourea are added in a three-necked flask and mixed, and the three-necked flask is placed in a magnetic stirring oil bath, and three bottles Insert a sealing plug, a condenser tube and a thermometer into the mouth respectively, stir while heating, keep warm at 150°C for 1 hour, and cool naturally to room temperature to prepare a solution containing ZnS nanopowder.

[0041] ...

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Abstract

The invention discloses a method for forming a ZnS / SnS / CuA core-shell structure composite powder through thermosynthesis of a normal pressure solvent. Reaction raw materials are dispersed in the solvent to form a raw material solution; and then the reaction raw material solution is added to a three-necked flask step by steps; and the thermosynthesis reaction of the normal pressure solvent is completed by heating in a magnetic stirring oil bath. The synthesis speed of the thermosynthesis reaction of the normal pressure solvent is increased through magnetic stirring; and the thermodynamic and dynamic conditions for generating a product are achieved through stirring while heating so that the target product ZnS / SnS / CuA core-shell structure composite powder is synthesized. The method provided by the invention has the advantages of low cost, simple reaction device, high reaction process controllability and the like, and is capable of controlling the whole reaction synthesis process quite flexibly, thereby forming specific structure and specific composition.

Description

technical field [0001] The invention relates to a method for synthesizing ZnS / SnS / CuA three-layer core-shell structure semiconductor material composite powder at atmospheric pressure, wherein A is one or both of S and Se, and the semiconductor material can be used for solar cells, Photovoltaic devices and other technical fields. Background technique [0002] ZnS / SnS / Cu(S and / or Se) semiconductor materials can be used in the preparation of thin-film solar cell precursors and the development and production of related photoelectric conversion devices; usually, the conditions for solvothermal synthesis of the above-mentioned composite materials are relatively harsh, and the reaction speed is slow. Slower, even after a long time of heat preservation under closed high pressure; this synthesis method is also less flexible, and the intermediate process of the reaction cannot be intervened in a closed environment, and it is difficult to complete the controllable synthesis of specific...

Claims

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Application Information

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IPC IPC(8): B01J13/02C01G9/08C01G19/00C01G3/12C01B19/04
Inventor 龙飞莫淑一池上森高洁邹正光
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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